11/30/2023 0 Comments Avitools registration codeThe file data consists of chunks and lists, in any order. The value of fileSize includes the size of the fileType FOURCC plus the size of the data that follows, but does not include the size of the 'RIFF' FOURCC or the size of fileSize. Where 'RIFF' is the literal FOURCC code 'RIFF', fileSize is a 4-byte value giving the size of the data in the file, and fileType is a FOURCC that identifies the specific file type. A RIFF file consists of a RIFF header followed by zero or more lists and chunks. The AVI file format is based on the RIFF (resource interchange file format) document format. The AVI file format uses FOURCC codes to identify stream types, data chunks, index entries, and other information. FOURCCs can contain space characters, so ' abc' is a valid FOURCC. For example, the FOURCC 'abcd' is represented on a Little-Endian system as 0圆4636261. FOURCCsĪ FOURCC (four-character code) is a 32-bit unsigned integer created by concatenating four ASCII characters. For further information on these extensions, see OpenDML AVI File Format Extensions, published by the OpenDML AVI M-JPEG File Format Subcommittee. ![]() This section does not describe the OpenDML AVI file format extensions. A simple variation for an AVI sequence uses video data and does not require an audio stream. Most AVI sequences use both audio and video streams. In general, AVI files contain multiple streams of different types of data. The Microsoft AVI file format is a RIFF file specification used with applications that capture, edit, and play back audio-video sequences.
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